CN105480803B - It is a kind of portable with elevator brake braking force square tester - Google Patents
It is a kind of portable with elevator brake braking force square tester Download PDFInfo
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- CN105480803B CN105480803B CN201610043732.8A CN201610043732A CN105480803B CN 105480803 B CN105480803 B CN 105480803B CN 201610043732 A CN201610043732 A CN 201610043732A CN 105480803 B CN105480803 B CN 105480803B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
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Abstract
The present invention provides a kind of portable with elevator brake braking force square tester, it can provide reliable basis to carrying out quantitative accurate inspection with the braking moment under elevator static state for the comprehensive test of elevator.It includes barring gear and control system, barring gear include handwheel and coaxial with handwheel and dismountable different size steamboat several；The radius of steamboat and handwheel is in multiple proportion, and torque sensor and touch control display are housed on handwheel；Control system includes input-output system and computer chip control system.Instrument is easy to carry, and convenient for elevator reviewer's in-site measurement, measurement process is convenient, fast, measurement data science, accurate, and any damage and safe will not be caused to experiment elevator.
Description
Technical field
It is specifically a kind of portable with elevator brake braking force the invention belongs to elevator safety inspection tester
Square tester.
Background technology
Elevator brake device is mounted on tracking-driven elevator, and elevator car position is kept when Elevator landing stops
With the device for making lift car stop motion in elevator operation out of control.It plays very important work to the safe operation of elevator
With.But with elevator longtime running and maintain the reasons such as not in place, such as there is screw loosening, braking lining in elevator brake
There is greasy dirt etc. that braking moment is caused to reduce in abrasion, braking device wheel, and make the improper movement of lift car that elevator passenger be caused to hinder
Die accident.It is the main of elevator accident due to elevator brake braking moment deficiency lift car to be caused to slip ladder and hurt sb.'s feelings in recent years
One of reason.Such as Shenyang Huayang mansion lift car on July 15th, 2015 falls downwards from 27 buildings, causes 12 people injured；
7.30 Hangzhou Xinhua mill residential elevators in 2015 are improper to slip the ladder folder lethal accident of people；2014 Nian9Yue14 Xiamen University elevators
It is all due to caused by elevator brake braking moment deficiency to press from both sides the accidents such as people is lethal.
Since the unqualified accident that elevator car slipping is caused to hurt sb.'s feelings of elevator brake braking moment happens occasionally, have both at home and abroad very
More entity and individual have put into the research to elevator brake braking moment.There are famous Sun Lixin professors and Chong Qingte in China
Kind of equipment safety examines Yuan Deng mechanisms, their research mainly using elevator in normal speed elevator no-load, rated load,
The braking distance of emergency braking measurement car and the method for braking deceleration carry out indirect detection under 125% three kinds of rated load operating mode
The braking moment of brake.This method is also the method that dynamic test is recommended.
The defects of this method is：What it was tested is the dynamic braking capability of elevator brake first, and the thing of elevator
Therefore it is that improper shifting occurs for static brake torque deficiency car of the elevator due to brake under leveling opening dead ship condition mostly
It is dynamic to cause elevator casualty accident；Secondly in practice examining, the braking distance of this more difficult accurate measurement car of method and braking subtract
Speed；It is since the abrasion that emergency braking causes braking to serve as a contrast has brake certain injury again.
The static brake torque deficiency that terraced accident is lift car brake in flat bed mostly is slipped according to present elevator
The improper movement of car is caused caused by pressing from both sides people, the purpose of the application is mainly the root of the accident development according to elevator
Go out one kind under elevator static state, the instrument of the braking moment size of quick, the accurate measurement brake of elevator reviewer.This
The technical standard and the method for inspection of tester comply fully with GB 7588-2003《Elevator manufactures and installation safety standard》、GB/T
10059《Elevator experimental method》、GB/T 10060-2011《Safety standard is checked and accepted in elevator installation》With GB/T 24478-2009《Electricity
Terraced traction machine》Wait state compulsions or voluntary standard.
According to GB/T 24478-2009《Elevator traction machine》Middle 4.2.2.2 moneys provide " the specified braking moment of traction machine
It should be decided through consultation with traction machine user or converted for nominal torque to braked wheel by 12.4.2.1 in GB 7588-2003（Disk）On turn
2.5 times of square " generally drag the detection of static brake torque in manufactory's exfactory inspection of traction machine using on testing stand
Truck dead lever on running wheel is detected in the method for lever end plus counterweight.But to the braking moment detection in the brake with elevator
In, due to the weight of car and counterweight, the weight of traction steel-cable, the weight for compensating chain, car be located at different position etc. because
The influence of element, makes calculating become complex, the more difficult foundation of mathematical model, so so far without to elevator brake braking force
The special instrument of square detection.
The content of the invention
The present invention provides a kind of portable with elevator brake braking force square tester, it can be to static with elevator
Braking moment under state carries out quantitative accurate inspection, and reliable basis are provided for the safe practice inspection of elevator.
The present invention realizes that above-mentioned purpose uses following technical scheme：
A kind of portable with elevator brake braking force square tester, it includes barring gear and control and display system
System.
If the barring gear includes the steamboat of handwheel and coaxial with handwheel and dismountable different size
Dry；The steamboat and the radius of handwheel are in multiple proportion, and the steamboat is connect with square axis axis or hexagonal shaft axis
The form connect is realized coaxial with handwheel；Equipped with torque sensor and control and display system on the handwheel；Institute
The control stated and display system include input-output system and computer chip control system, and the input-output system is using tactile
The liquid crystal display of control, the parameter of typing include being manually entered parameter and sensor measurement input parameter；Described is manually entered
Parameter includes：State of elevator (zero load for 1, be fully loaded with for 2), traction machine jiggering main wheel radius, traction sheave radius, empty car mass,
Traction steel-cable cornerite on the traction sheave, traction machine nominal torque（Or the specified braking moment of brake）, elevator payload ratings
Amount, coefficient of balance, traction ratio, jiggering steamboat number；The sensor measures parameters are applied for the manpower of torque sensor measurement
The torque being added on handwheel.Computer chip control system mainly realizes the control of instrument itself and according to above-mentioned input parameter
Automatically the critical moment of the elevator is calculated.
The state of elevator refers to zero load or the full load condition of elevator；The jiggering steamboat number act as definite disk
The radius ratio of the big steamboat of vehicle.
The calculation of the computer chip control system is：
1）The horse-power formula that elevator motor needs：
(Kw) in formula：Power required for P-motor（Kw）；
Q-nominal load capacity（kg）；
V-car speed（m/s）；
KIt is flat- coefficient of balance；
G-acceleration of gravity（9.8m/s2）;
η-elevator device efficiency
2）Rated motor torque（N·m）：
In formula：Power required for P-motor（Kw）；
Ne-motor speed
3）The quality of counterweight：
GCounterweight mass= GEmpty car mass+ KIt is flat×Q
In formula：GEmpty car massThe sole mass of-car；
KIt is flat- coefficient of balance；
Q-nominal load capacity（kg）
4）The vertical force that counterweight-side is formed on the traction sheave due to the effect of directive wheel：
T=cos(180-α) ×TIt draws
In formula：
The cornerite of α-traction steel-cable on the traction sheave
TIt draws- directive wheel side draw
5）The calculating of two kinds of typicalness lower critical torque：
A. car is horizontally situated with counterweight, unloaded in car, and during jiggering upward with handwheel, brake faces
Boundary's torque：
MP+MIt is right≥MZ+MEmpty sedan-chair
Critical moment：MP + MIt is right= MZ + MEmpty sedan-chair
MP = MZ -（The p- M of MEmpty sedan-chair）
In formula：MP- handwheel applies torque on the brake wheel
MIt is right- counterweight weight applies torque on the brake wheel
MZThe specified braking moment of-traction machine brake
MEmpty sedan-chair- sky car weight applies torque on the brake wheel
As jiggering test moment ＜ MPWhen occurring sliding between brake block and braked wheel, illustrate the braking moment of brake
Become smaller than specified braking moment, the braking moment of brake is unqualified, and brake should adjust；As jiggering test moment >=MPDo not have also
When occurring the slip between brake block and braked wheel, specified braking moment can be reached by illustrating the braking moment of brake, system
The braking moment of dynamic device is qualified.
B. car is horizontally situated with counterweight, is fully loaded in car, and during jiggering downward with handwheel, brake faces
Boundary's torque：
MP + MFull sedan-chair≥MZ + MIt is right
Critical moment：MP+MFull sedan-chair= MZ + MIt is right
MP = MZ- （ MFull sedan-chair-MIt is right）
MFull sedan-chair= MEmpty sedan-chair+ Q
In formula：MFull sedan-chair- car all-up weight applies torque on the brake wheel；
Other MP、MZ、MTo,Q is identical with above formula meaning.
As jiggering test moment ＜ MPWhen occurring sliding between brake block and braked wheel, illustrate the braking moment of brake
Become smaller than specified braking moment, the braking moment of brake is unqualified, and brake should adjust；As jiggering test moment >=MPDo not have also
When occurring the slip between brake block and braked wheel, specified braking moment can be reached by illustrating the braking moment of brake, system
The braking moment of dynamic device is qualified.
6）The calculating of barring torque：
MP =F2× R braked wheel radiuses
F2- it is to utilize handwheel effect power on the brake wheel
There are one bull wheel and a steamboats, bull wheel on this instrument handwheel to be used for the force of hand turning, and steamboat is used for
And the combination of braked wheel, for two wheels by being coaxially fixed together, the torque on two wheels is identical.
F2×RSteamboat=F1× RBull wheel
F1- the power being applied to for manpower on handwheel bull wheel
F2= F1× RBull wheel÷RSteamboat
Then：MP = F2× R braked wheels radius=F1× RBull wheel÷RSteamboat× R braked wheel radiuses
Preferably, electrodynamic type jiggering wheel construction can be used in the handwheel, it is to install direct current additional on jigger wheel
Machine forms.
Electric moter voltage chooses 110VDC, and power, which chooses output torque, can reach nominal load capacity 1600Kg, normal speed 2.5
The power of motor of the critical moment of m/s elevators.Rotor axis of electric external part installs jigger wheel, and mounting torque senses on jigger wheel
Device can transmit torque measured value to master controller in real time.Control and display portion are by power switch, " startup/pause " button, electricity
The input and output of brain chip and touch liquid crystal screen formula are shown and the control section of direct current generator composition.Computer chip and touch liquid crystal
The function and input/output argument of the input and output display portion of screen formula are identical with manpower driving jiggering measurement model.Direct current generator
Control section be mainly made of the rectifying part and circuit for controlling motor of power supply, it is gradual by controlling being incremented by for output current
Increase output torque, when the torque fed back at from jigger wheel reaches critical moment, stop motor output, complete measurement；Or
Although output torque also stops motor output when being less than critical moment and sliding between brake block and braked wheel, complete to survey
Amount.To ensure safety, when there is output torque and reach critical moment and motor do not stop output when failures when, set " start/temporarily
Stopping " button can artificially stop motor operation.
The present invention is had the advantages that using above-mentioned technical proposal：
1st, instrument is easy to carry, convenient for elevator reviewer's in-site measurement
This instrument is loaded in a miniature instrument case, and weight only has five, six kilograms, and elevator reviewer scene is facilitated to carry；
2nd, measurement process is convenient, fast
This instrument is not required to any wiring at the scene, only need to simply enter elevator parameter, so that it may calculate elevator automatically
Critical moment under two states, but because this instrument is static measurement, compared with dynamic measures, time of measuring is shorter；
3rd, measurement data science, accurate
The correlation theory of this instrument is according to all using the relevant pressure of national elevator or proposed standard, such as GB 7588-
2003《Elevator manufactures and installation safety standard》、GB/T 10059《Elevator experimental method》、GB/T 10060-2011《Elevator is pacified
Dress checks and accepts safety standard》、GB/T 24478-2009《Elevator traction machine》Deng, computation model establishes science, and calculating process is rigorous,
Data, which are shown, directly uses digital-scroll technique, accurately, intuitively；
4th, it is versatile
This instrument uses replaceable jiggering steamboat, can be applicable in different elevator specifications；
5th, any damage will not be caused to experiment elevator
The method that this instrument uses static measurement, will not compared with the method for the braking moment of dynamic measurement brake
Elevator brake lining is caused to wear, any damage will not be caused to elevator brake；
6th, it is safe
This apparatus measures process is worked in the case where elevator powers off static state in itself, so safer for survey crew.
Description of the drawings
Fig. 1 and Fig. 2 is the structure of handwheel.
The module diagram of Fig. 3 systems in order to control.
Fig. 4 is the schematic diagram of traction sheave and directive wheel upper pulling force.
Fig. 5 is the schematic diagram of electrodynamic type barring structure.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
A kind of portable with elevator brake braking force square tester, it includes barring gear and control system.
Barring gear as depicted in figs. 1 and 2 includes handwheel and coaxial from handwheel and dismountable different rule
The steamboat of lattice several；The steamboat and the radius of handwheel in multiple proportion, the steamboat connect with square axis axis or
The form that hexagonal shaft axis connects is realized coaxial with handwheel；It is shown on the handwheel equipped with torque sensor and touch-control
Device；Control system as shown in Figure 3 includes input-output system and computer chip control system, input-output system record
The parameter entered includes being manually entered parameter and sensor measurement input parameter；The parameter that is manually entered includes：State of elevator
(zero load for 1, be fully loaded with for 2), traction machine jiggering main wheel radius, traction sheave radius, empty car mass, traction steel-cable is in traction sheave
On cornerite, traction machine nominal torque（Or the specified braking moment of brake）, elevator nominal load capacity, coefficient of balance, traction ratio,
Jiggering steamboat is numbered；The sensor measures parameters are applied to the power on handwheel for the manpower of torque sensor measurement
Square.
The state of elevator refers to zero load or the full load condition of elevator；The jiggering steamboat number act as definite disk
The radius ratio of the big steamboat of vehicle.
The calculation of the computer chip control system is：
1）The horse-power formula that elevator motor needs：
(Kw) in formula：Power required for P-motor（Kw）；
Q-nominal load capacity（kg）；
V-car speed（m/s）；
KIt is flat- coefficient of balance；
G-acceleration of gravity（9.8m/s2）;
η-elevator device efficiency
2）Rated motor torque（N·m）：
In formula：Power required for P-motor（Kw）；
Ne-motor speed
3）The quality of counterweight：
GCounterweight mass= GEmpty car mass+ KIt is flat×Q
In formula：GEmpty car massThe sole mass of-car；
KIt is flat- coefficient of balance；
Q-nominal load capacity（kg）
4）The vertical force that counterweight-side is formed on the traction sheave due to the effect of directive wheel：
In Fig. 4, it is known that：Cornerite is α, then β=180o- α
In AOD, ∠ AOD+ ∠ OAD=90o
And OA ⊥ AC, so ∠ BAC+ ∠ OAD=90o
So ∠ BAC=∠ AOD=180o- α
In ABC, AB=COS ∠ BAC × AC=COS (180o- α) × AC
5）The calculating of two kinds of typicalness lower critical torque：
A. car is horizontally situated with counterweight, unloaded in car, and during jiggering upward with handwheel, brake faces
Boundary's torque：
MP+MIt is right≥MZ+MEmpty sedan-chair
Critical moment：MP + MIt is right= MZ + MEmpty sedan-chair
MP = MZ -（The p- M of MEmpty sedan-chair）
In formula：MP- handwheel applies torque on the brake wheel
MIt is right- counterweight weight applies torque on the brake wheel
MZThe specified braking moment of-traction machine brake
MEmpty sedan-chair- sky car weight applies torque on the brake wheel
As jiggering test moment ＜ MPWhen occurring sliding between brake block and braked wheel, illustrate the braking moment of brake
Become smaller than specified braking moment, the braking moment of brake is unqualified, and brake should adjust；As jiggering test moment >=MPDo not have also
When occurring the slip between brake block and braked wheel, specified braking moment can be reached by illustrating the braking moment of brake, system
The braking moment of dynamic device is qualified.
B. car is horizontally situated with counterweight, is fully loaded in car, and during jiggering downward with handwheel, brake faces
Boundary's torque：
MP + MFull sedan-chair≥MZ + MIt is right
Critical moment：MP+MFull sedan-chair=MZ+MIt is right
MP = MZ- （ MFull sedan-chair-MIt is right）
MFull sedan-chair= MEmpty sedan-chair+ Q
In formula：MFull sedan-chair- car all-up weight applies torque on the brake wheel；
Other MP、MZ、MTo,Q is identical with above formula meaning.
As jiggering test moment ＜ MPWhen occurring sliding between brake block and braked wheel, illustrate the braking moment of brake
Become smaller than specified braking moment, the braking moment of brake is unqualified, and brake should adjust；As jiggering test moment >=MPDo not have also
When occurring the slip between brake block and braked wheel, specified braking moment can be reached by illustrating the braking moment of brake, system
The braking moment of dynamic device is qualified.
6）The calculating of barring torque：
MP =F2× R braked wheel radiuses
F2：For the power using handwheel effect on the brake wheel
There are one bull wheel and a steamboats, bull wheel on this instrument handwheel to be used for the force of hand turning, and steamboat is used for
And the combination of braked wheel, for two wheels by being coaxially fixed together, the torque on two wheels is identical.
F2×RSteamboat=F1× RBull wheel
F1- the power being applied to for manpower on handwheel bull wheel
F2= F1× RBull wheel÷RSteamboat
Then：MP = F2× R braked wheels radius=F1× RBull wheel÷RSteamboat× R braked wheel radiuses
7）Implement calculated example
Assuming that traction machine rated moment is 650 N.m, coefficient of balance KIt is flatFor 46%, elevator nominal load capacity Q is 1000kg,
Traction sheave radius R traction sheaves are 0.2m, and traction ratio 2/1, the radius of handwheel bull wheel and steamboat is 8, empty car mass
GEmpty car massFor 900kg, wrap angle sigma is 150 °.
（1）The weight difference of car and counterweight is to the Calculating Torque during Rotary that is generated on braked wheel under two kinds of typicalnesses：
A, car and counterweight are horizontally situated, unloaded in car, and the weight difference of car and counterweight on traction sheave to generating
Torque difference：
The p- M of MEmpty sedan-chair=GCounterweight weight2 × COS of ÷ (180o- α) × g × R traction sheaves-GEmpty car weight2 × g of ÷ × R traction sheaves
=（GEmpty car mass+ KIt is flat×Q）2 × COS of ÷ (180o- α) × g × R traction sheaves
- GEmpty car weight2 × g of ÷ × R traction sheaves
=（GEmpty car mass+ KIt is flat×Q）×COS(180º-α)- GEmpty car weight2 × g of ÷ × R traction sheaves
=（900+46%×1000）× COS (180o-150o) -900 ］ ÷ 2 × 9.8 × 0.2
=［ 1360 × 0.866-900 ］ ÷ 2 × 9.8 × 0.2
=277÷2×9.8×0.2
=271.46Nm
B, car and counterweight are horizontally situated, and are fully loaded in car, the weight difference of car and counterweight on traction sheave to generating
Torque difference：
MFull sedan-chair -MIt is right=（GEmpty car mass+Q）÷2×g×RTraction sheave-GCounterweight weight2 × COS of ÷ (180o- α) × g × R traction sheaves
=（GEmpty car mass+ Q）-（GEmpty car mass+ KIt is flat×Q）× COS (180o- α) ］ 2 × g of ÷ × R traction sheaves
=（900+1000）-（900+46%×1000）× COS (180o-150o) ］ ÷ 2 × 9.8 × 0.2
=723÷2×9.8×0.2
=708.54Nm
The calculating of (2) two kinds of typicalness lower critical torque：
A, car and counterweight are horizontally situated, unloaded in car, during jiggering upward with handwheel, brake it is critical
Torque：
MP =MZ-（The p- M of MEmpty sedan-chair）=650×2.5-271.46=1353.54 N·m
B, car and counterweight are horizontally situated, and are fully loaded in car, during jiggering downward with handwheel, brake it is critical
Torque：
MP = MZ -（MFull sedan-chair -MIt is right）=650×2.5-708.54=916.46 N·m
The calculating of the critical force on handwheel is applied under (3) two kinds of typicalnesses：
A, car and counterweight are horizontally situated, unloaded in car, during jiggering upward with handwheel, manpower effect jiggering
Power on handwheel：
0.2 × 1/8=845.96N of F1=1353.54 ÷
B, car and counterweight are horizontally situated, and are fully loaded in car, during jiggering downward with handwheel, manpower effect jiggering
Power on handwheel：
0.2 × 1/8=572.79N of F1=916.46 ÷
It is as shown in Figure 5 electrodynamic type jiggering wheel construction, it is to install direct current generator composition additional on jigger wheel.
Electric moter voltage chooses 110VDC, and power, which chooses output torque, can reach nominal load capacity 1600Kg, normal speed 2.5
The power of motor of the critical moment of m/s elevators.Rotor axis of electric external part installs jigger wheel, and mounting torque senses on jigger wheel
Device can transmit torque measured value to master controller in real time；Control and display portion are by power switch, " startup/pause " button, electricity
The input and output of brain chip and touch liquid crystal screen formula are shown and the control section of direct current generator composition.Computer chip and touch liquid crystal
The function and input/output argument of the input and output display portion of screen formula are identical with manpower driving jiggering measurement model.Direct current generator
Control section be mainly made of the rectifying part and circuit for controlling motor of power supply, it is gradual by controlling being incremented by for output current
Increase output torque, when the torque fed back at from jigger wheel reaches critical moment, stop motor output, complete measurement；Or
Although output torque also stops motor output when being less than critical moment and sliding between brake block and braked wheel, complete to survey
Amount.To ensure safety, when there is output torque and reach critical moment and motor do not stop output when failures when, set " start/temporarily
Stopping " button can artificially stop motor operation.
Claims (2)
1. a kind of portable with elevator brake braking force square tester, it includes barring gear and control system, feature
It is：The barring gear includes handwheel and the steamboat of coaxial with handwheel and dismountable different size is several
It is a；The steamboat and the radius of handwheel are in multiple proportion, and the steamboat is connect with square axis axis or hexagonal shaft axis connects
Form and handwheel realize it is coaxial；Torque sensor and touch control display are housed on the handwheel；The control
System processed includes input-output system and computer chip control system, and the parameter of the input-output system typing is included manually
Input parameter and sensor measurement input parameter；The parameter that is manually entered includes：State of elevator, traction machine jiggering main wheel half
Footpath, traction sheave radius, empty car mass, cornerite, traction machine nominal torque or the brake volume of traction steel-cable on the traction sheave
Customize kinetic moment, elevator nominal load capacity, coefficient of balance, traction ratio, jiggering steamboat number；The sensor measurement input ginseng
Number is applied to the torque on handwheel for the manpower of torque sensor measurement；The state of elevator refers to the unloaded of elevator or full
Load state；The radius ratio for acting as determining the big steamboat of jiggering of the jiggering steamboat number；The computer chip control system
The calculation of system is：
1）Horse-power formula required for elevator motor：
P=(1-KIt is flat)QVg/η
In formula：
P --- power required for motor（w）
Q --- nominal load capacity（kg）
V --- car speed（m/s）
KIt is flat--- coefficient of balance
G --- acceleration of gravity（9.8m/s2）
η --- elevator device efficiency
2）Rated motor torque（N·m）
Te=P×9550/ne
In formula：
P --- power required for motor（w）
ne--- motor speed
3）The quality of counterweight（kg）
GCounterweight mass=GEmpty car mass+KIt is flat×Q
In formula：
GEmpty car mass--- the sole mass of car
KIt is flat--- coefficient of balance
Q --- nominal load capacity（kg）
4）The vertical force that counterweight-side is formed on the traction sheave due to the effect of directive wheel
T=cos(180-α)×TIt draws
In formula：
The cornerite of α --- traction steel-cable on the traction sheave
TIt draws--- directive wheel side draw
5）The calculating of two kinds of typicalness lower critical torque
A. car is horizontally situated with counterweight, unloaded in car, during jiggering upward with handwheel, the critical force of brake
Square；
MP+MIt is right≥MZ+MEmpty sedan-chair
Critical moment：MP+MIt is right=MZ+MEmpty sedan-chair
MP=MZ-(MIt is right-MEmpty sedan-chair)
In formula：
MP--- handwheel applies torque on the brake wheel
MIt is right--- counterweight weight applies torque on the brake wheel
MZ--- the specified braking moment of traction machine brake
MEmpty sedan-chair--- empty car weight applies torque on the brake wheel
As jiggering test moment ＜ MPWhen occurring sliding between brake block and braked wheel, illustrate that the braking moment of brake compares volume
Customization kinetic moment becomes smaller, and the braking moment of brake is unqualified, and brake should adjust；As jiggering test moment ＞ MPThere are no go out
When showing the slip between brake block and braked wheel, illustrate that the braking moment of brake is bigger than specified braking moment, the system of brake
Kinetic moment is qualified；
B. car is horizontally situated with counterweight, is fully loaded in car, during jiggering downward with handwheel, the critical force of brake
Square；
MP+MFull sedan-chair≥MZ+MIt is right
Critical moment：MP+MFull sedan-chair=MZ+MIt is right
MP=MZ-(MFull sedan-chair-MIt is right)
In formula：
MFull sedan-chair--- car all-up weight applies torque on the brake wheel
Other MP、MZ、MIt is rightIt is identical with above formula meaning
As jiggering test moment ＜ MPWhen occurring sliding between brake block and braked wheel, illustrate that the braking moment of brake compares volume
Customization kinetic moment becomes smaller, and the braking moment of brake is unqualified, and brake should adjust；As jiggering test moment ＞ MPThere are no go out
When showing the slip between brake block and braked wheel, illustrate that the braking moment of brake is bigger than specified braking moment, the system of brake
Kinetic moment is qualified；
6）Handwheel applies the calculating of torque on the brake wheel
MP=F2×RBraked wheel radius
F2For the power using handwheel effect on the brake wheel
There are one bull wheel and a steamboat on handwheel, bull wheel is used for the force of hand turning, and steamboat is used for and braked wheel
With reference to for two wheels by being coaxially fixed together, the torque on two wheels is identical；
F2×RSteamboat=F1×RBull wheel
F1The power on handwheel bull wheel is applied to for manpower
F2=F1×RBull wheel÷RSteamboat
Then：MP=F2×RBraked wheel radius=F1×RBull wheel÷RSteamboat×RBraked wheel radius。
2. one kind according to claim 1 is portable with elevator brake braking force square tester, it is characterised in that：Institute
Electrodynamic type jiggering wheel construction can be used in the handwheel stated, it is to install direct current generator composition additional on jigger wheel；Electric moter voltage selects
110VDC is taken, power, which chooses output torque, can reach nominal load capacity 1600Kg, the critical moment of normal speed 2.5m/s elevators
Power of motor；Rotor axis of electric external part installs jigger wheel, mounting torque sensor on jigger wheel, can be in real time to master controller
Transmit torque measured value；Control and display portion are by power switch, " startup/pause " button, computer chip and touch liquid crystal screen
The input and output of formula are shown and the control section of direct current generator composition；The input and output of computer chip and touch liquid crystal screen formula are shown
Partial function and input/output argument is identical with manpower driving jiggering measurement model；The control section of direct current generator is mainly by electricity
Source rectifying part and circuit for controlling motor composition, it by the way that being incremented by for output current is controlled to gradually increase output torque, when from
When the torque fed back at jigger wheel reaches critical moment, stop motor output, complete measurement；Although output torque be less than face
Boundary's torque and while being slided between brake block and braked wheel, also stops motor output, complete measurement；To ensure safety, work as appearance
Output torque reaches critical moment and motor sets " startup/pause " button that can artificially stop when not stopping exporting this failure
Motor operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610043732.8A CN105480803B (en) | 2016-01-22 | 2016-01-22 | It is a kind of portable with elevator brake braking force square tester |
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| CN201610043732.8A CN105480803B (en) | 2016-01-22 | 2016-01-22 | It is a kind of portable with elevator brake braking force square tester |
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| CN105480803B true CN105480803B (en) | 2018-06-05 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106976775A (en) * | 2017-05-16 | 2017-07-25 | 天津市特种设备监督检验技术研究院 | The method and evaluating apparatus of a kind of manual Indirect evaluation traction machine braking moment |
| CN108147240B (en) * | 2017-12-06 | 2019-06-21 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | A kind of digitized elevator brake ability monitoring and method for early warning |
| CN109029823A (en) * | 2018-09-03 | 2018-12-18 | 快意电梯股份有限公司 | Synchnorous gearless dragging machine braking-force detecting device and detection method |
| CN109650205B (en) * | 2019-01-09 | 2020-07-17 | 张学伦 | Method and tester for measuring balance coefficient and compensation performance of elevator |
| CN110057485B (en) * | 2019-04-23 | 2021-12-17 | 上海三菱电梯有限公司 | Braking torque setting device and method of spindle brake |
| CN111717752B (en) * | 2020-06-18 | 2022-03-01 | 深圳市质量安全检验检测研究院 | Method, apparatus, storage medium and device for checking braking performance of elevator brake |
| CN114572789B (en) * | 2022-03-17 | 2024-05-28 | 广东省特种设备检测研究院东莞检测院 | Remote detection method and device for elevator performance |
| CN115479713B (en) * | 2022-08-04 | 2024-09-06 | 福建省特种设备检验研究院 | Traction type elevator braking moment measuring equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1253703C (en) * | 2003-10-14 | 2006-04-26 | 曾晓东 | Brake force moment measuring device and method |
| CN101226096A (en) * | 2008-02-02 | 2008-07-23 | 王健 | Method for measuring torsion of elevator balancing coefficient as well as test device thereof |
| CN102583121A (en) * | 2012-01-19 | 2012-07-18 | 李典伟 | Method for testing elevator balance coefficient by aid of elevator handwheel |
| CN202575602U (en) * | 2012-01-19 | 2012-12-05 | 李典伟 | Device adopting elevator handwheel for testing elevator balance coefficient |
| CN205367369U (en) * | 2016-01-22 | 2016-07-06 | 袁传森 | Portablely use elevator brake braking moment tester |
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